Valve connecter for delivery tubes



VALVE CONNECTER FOR DELIVERY TUBES Filed April 18, 1927 INVENTOR,

By Roy Tadcl wwdzzz ATTORNEY.

Patented Nov; 13, 1928.

Roy WQTADD, or WALNUT rAn-K, o L Fonn'Ia.

VALVE oonnncrnn FOR' ELIVERY moans."

' Application filed April 18, 1927. Seria1 No.'1 8 4,609;

My invention relates to hose fittings and more particularly to a valve connection for use on a supply hose or delivery tube.

The primary object of my invention 'isito provide a. convenient fitting or connection for the apparatus end of a deliver tube,

whereby it readily may be attached to orde-. tached from a blowpipe or similar apparatus,

supplied with a gas or liquid under pressure, from a source to which the other end oi the delivery tube is connected. I I

A further object is to provide a connection, of the character described, equipped with a valve which automatically will shut elf the gas or liquid supply when the d e-' livery tube is disconnected from the ap-' paratus, thereby minimizing waste, saving time and labor and securing protection to" the operator.

Other ob ects and advantages Wlll appear hereinafter, and while I show herewith and will describe a preferred form of construc-' tion. I do not desire to limit myself to such preferred form but that various changes and adaptations may be made therein without departing from the spirit of my invention as hereinafter claimed.

Referring to the drawings which accom-' pany this specification and form a part thereof.

Fig. 1 is a side view of the apparatus end of delivery tube equipped with my valve connection.

'Fig. 2 is a sectional view of the tube and valve connection shown in Fig. 1, taken on line 2--2 of that figure.

Fig. 3 is a view in elevation of the valve connection shown in Fig. 1, looking into the open end thereof.

The fitting or connection is made up of several metallic parts including a valve-tube 10, a union-nut 11, a spacing sleeve 12., a shut-oil valve 13, a contact-tube 14 and a seating spring 15. One end of valve tube 10 is made of a suitable size to serve as a nipple 16, upon which the hose 17, from a supply source is stretched and secured by a clamp 18 in the usual way, thev usual annular grooves 19 being provided to insure against danger of the hosepulling oil therefrom.

, The body part 20 of the valve-tube 10. is

somewhat larger in diameter than nipple 16 so that an external annular shoulder 21 is formed at the junction point. An internal annular shoulder 22 is likewise "formed between the bore 23 of body part 20 and reduced bore 24- of nipple 16. An enlarged bore 25, tapered into bore 23 so as to form a valve seat 26, is made in the free end of nipple 16 and the open'end of bore 24, in body portion 20, is rcanied out to form a seat 27. Body portion 20 isprovided with a terminal flange 28 WhlCll term an external :nmular shoulder 29 adjacent the larger end oi: valve-tube 10. I

Union-nut 11 is made with a hexagonal exterior, to serve as a wrench seat,and an internal bore 30 adapted to fit terminal flange 28, of valve tube 10. union-nut 11 has a reduced bore to fit body One end of portion 20, so that an internal flange 31 is formed thereon which is adapted to engage shoulder 29 of body portion 20 when. unionnut 11 is slipped over nipple 16 onto body portion 20. Union-nut 11 is internally threaded; as at 32, to engage the'threaded nipple of a blow-pipe or other apparatus to which it isto be connected. Spacing-sleeve 12 is slippedover body portion 20 of valvetube 10, before nipple 16 is inserted into the hose, to'hold'union-nut 11 up against shoul-' der 29.

Cut-oft valve 13 consists of a closure-disc 33 having a spherical seating face 34 adapted to rest on seat 26. It is equipped with a long slender stem 35 extending longitudinally .throughbore 24 of nipple 16 into bore 23 of body part- 20. The inner end of contact-tube 14 telescopes freely within bore 23 of body part 20 and is connected tothe flattened end 36 of stem 35 by a transverse pin 37 extending through said flattened end 36 and said contact-tube 14, as shown in Fig. 2. The other end of contact-tube 14 is equipped with a flanged head 38 and a seating face 39 adapted to contact with valve seat 27 of valve-tube 10. The beveled seating surface 39 of the valve head 38 is concentric to the axis of the contact tube 14, and the correspondingly beveled valve seat 27 is concentric to the bore 23 of the nipple body 16. Hence when head 38v is moved inwardlya sufficientdistance to bring its beveled surface 39 into engagement with beveled seat 27,

within, therefore, the centering means which has ust been described insures that said contact tube offers no frictional reslstance to 1ts outward movement for closure of the in sure-disc 33-are rigidly held in spacedrelation to each other by stem 35 and thatspring 15 operates to hold closure-disc 38 on its seat 26, except when pressure suiiicient to overbalance the action of spring 15'is brought to bear against head 38 of contact-. tube 14; This happens only when the hose or delivery tube is connected to an apparatus by screwing union-nut v11 onto the nipple;

thereof,whereupon the end of the nipple is brought into contact with head '38 so as to force contact-tube 14 inwardly until tace 39 oit'zhead 38 rests on seat 27 of valve-tube '10, which action simultaneously lifts the cut-off valve from its seat and permits the gas orcliquid to flow through the connection.

When work is to be suspended or the apparatus is to be disconnected for any reason it is only necessary to unscrewunlon nut '11 from the nipple, whereupon spring 15 acts to close the cut oif valve and the gas or liquid-supply isautomatic'ally cut off, thus saving the time and v labor involi'zed 1n going to the supply source can dturning a valve there, as is usually necessary,,and also tion. v v V It is evident thatmy valve connection may 7 contact tube and valve.

saving the contents of the delivery tube, more or less of wlilch'is usually Wasted.

Furthermore, all danger ofaccidents dueto leakage at the apparatusend of the delivery tube is "eliminated by the use of this connecbe used with apparatus supplied with compressed air, oxygen and hydrogen,acetylene,

illuminating gas or with any of liquid which is supplied under pressurethrough a delivery tube in the'manner described. I Havmg thusallustrated and described my nvention, I claim? In a device of the character described, the

combination, 'Withthe valve tube, and valve at the inner end of said tubegrofa contact tube extending into the outer endportion of said valve tube and in axial 'alinenient.;'

With the latter, the external' dia neter or the" portion of said contact tube which is within said valve tube being slightly less than a the internal diameter of theouter portion of said valve tube, there being lCO-OPQIHUIKQ' beveled seating surfaces co-acting betweensaid contact tube-and valve tube ,to center said contact tube loosely and concentrically Within the outer end of said valve tube, and

a connecting rod connecting together said ,IROYW; Tani); 

